USE OF EMBEDDED CORROSION SENSORS AND SENSOR BLANKETS TO DETECT PAINT DEGRADATION

摘要

In-situ corrosion sensors based on electrochemical impedance spectroscopy (EIS) have been used to detect coating defects and monitor coating degradation. Three versions of the sensor were evaluated: sensors embedded between the primer and topcoat, sensors permanently attached to the topcoat surface, and sensors mounted on the surface only during the measurement process. Each version offers potential to localize coating defects with the portability of the third version (sensor blanket) providing advantages in inspecting existing structures.